Legal Opinion
National Lead Co. v. Kingsland
District Court, District of Columbia
Decided January 12, 1948No. Civil Action 36965PublishedCited by 7 opinions
1Opinion of the CourtHoltzoff, Justice
This is an action against the Commissioner of Patents under Section 4915 of the Revised Statutes, 35 U.S.C.A. § 63, for the purpose of obtaining a patent on an application filed by Irvin M. Archer on May 9, 1942, serial No. 442280.
The claims in issue relate to a process for dissolving petroleum emulsions. The original application contained apparatus claims, as well as process claims, but the former have been abandoned.
The alleged invention relates to‘ a process of demulsification of emulsions composed of water and oil, which are produced by oil wells. In many oil wells, the product obtained…
2Cases cited2 opinions
- Magnaflux Corporation v. CoeCourt of Appeals for the D.C. Circuit · 1943
- Caille v. KingslandDistrict Court, District of Columbia · 1947
3Cited by7 opinions
- Gold Seal Company v. WeeksDistrict Court, District of Columbia · 1955
- Perini Corporation v. HeydeDistrict Court, D. Rhode Island · 1969
- Application of Jack H. HofstetterCourt of Customs and Patent Appeals · 1966
- Cook v. WatsonDistrict Court, District of Columbia · 1960
- Daggett & Ramsdell, Inc. v. MarzallDistrict Court, District of Columbia · 1954
2 more not listed; retrieve them via the Exa API.